Stainless steel pipe pressure testing equipment

Abstract

The utility model relates to the technical field of steel pipes, and discloses stainless steel pipe pressure testing equipment, which comprises two shells, baffles are connected to the circumferential inner walls of the two shells in a sliding manner, and pushing mechanisms for driving the baffles to move are arranged on one sides of the two shells. Fixing mechanisms for clamping the steel pipe are arranged on the inner walls of the two shells, a barrel is fixedly connected to one side of one baffle, and a through hole is formed in the position, located in the barrel, of the baffle. According to the utility model, the baffle plate and the cylinder body are matched for use, so that the steel pipes with different lengths can be detected, the use requirements of diversified steel pipe sizes can be met, the steel plates are clamped from different directions through the plurality of clamping plates, a stable clamping structure is formed, and the clamping stability of the steel pipes is improved.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe technology, and more specifically to a pressure testing device for stainless steel pipes. Background Technology

[0002] Stainless steel pipes are widely used in industrial pipelines for petroleum, machinery and instruments, and mechanical structural components. After the stainless steel pipes are produced, it is necessary to perform pressure checks on their internal surfaces.

[0003] A search revealed Chinese patent CN220039997U, which discloses a steel pipe pressure testing device. The device includes a base with a bottom cover fixedly connected to it. An exhaust mechanism allows air to be expelled from the steel pipe after water is injected, thus improving the accuracy of the pressure test. However, it suffers from the following drawback: the device's operation is limited by its internal space, preventing the insertion of excessively long steel pipes and hindering its adaptability to diverse steel pipe sizes. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a stainless steel pipe pressure testing device to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a stainless steel pipe pressure testing device, comprising two housings, with baffles slidably connected to the inner circumference of the two housings, a pushing mechanism for moving the baffles on one side of each of the two housings, and a fixing mechanism for clamping the steel pipe on the inner wall of each of the two housings, a cylinder fixedly connected to one side of one of the baffles, a through hole opened in the position of the baffle inside the cylinder, a pressure gauge connected to the inside of the cylinder on the outer circumference of the cylinder, and a connecting pipe for injecting gas into the cylinder fixedly connected to one side of the cylinder.

[0006] As a further embodiment of this utility model, the pushing mechanism includes a first lead screw threadedly connected to a threaded hole in the housing, and the first lead screw is rotatably connected to a baffle.

[0007] As a further embodiment of this utility model, the fixing mechanism includes a plurality of positioning columns uniformly fixedly connected to the inner circumference of the housing, a U-shaped frame slidably connected to the outer side of the positioning columns, a clamping plate fixedly connected to the bottom of the U-shaped frame, a plurality of second lead screws threadedly connected to the inner circumference of the housing, and the plurality of U-shaped frames and the plurality of lead screws correspond one-to-one, and the inner circumference of the housing is provided with a transmission mechanism that drives the plurality of second lead screws to rotate synchronously.

[0008] As a further embodiment of this utility model, the transmission mechanism includes a gear disk rotatably connected to the inner wall of the housing circumference, and a plurality of second lead screws are keyed to the outer circumference of one end of the inner wall of the housing with gears that mesh with the gear disk.

[0009] As a further embodiment of this utility model, two fixing plates are fixedly connected to the outer circumference of one of the housings, and a take-up roller is rotatably connected between the two fixing plates. A connecting rope is wound around the outer circumference of the take-up roller, and one end of the connecting rope is fixed to the take-up roller and the other end is fixed to the other housing. A torsion spring is fixedly connected to one side of one of the fixing plates, and the other end of the torsion spring is fixed to the take-up roller.

[0010] As a further embodiment of this utility model, one of the housings has a plurality of second protrusions fixedly connected to its outer circumference, and the other housing has a plurality of first protrusions fixedly connected to its outer circumference, with the plurality of first protrusions corresponding one-to-one with the plurality of second protrusions, and both the first protrusions and the second protrusions being made of magnets.

[0011] As a further embodiment of this utility model, a slot is provided on one side of each of the plurality of first protrusions, and a plug rod is provided on one side of each of the plurality of second protrusions to be inserted into the slot.

[0012] As a further improvement of this utility model, a sealing gasket to enhance sealing is fixedly connected to one side of each of the two baffles.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model, through the combined use of baffles and cylinders, enables the testing of steel pipes of different lengths, adapting to the diverse needs of steel pipe sizes and effectively overcoming the problem of limited internal space in equipment that prevents the testing of longer steel pipes.

[0015] 2. This utility model uses multiple clamping plates to clamp the steel plate from different directions, forming a stable clamping structure, thereby improving the stability of clamping the steel pipe and enabling quick positioning of the steel pipe to ensure alignment between the steel pipe and the through hole.

[0016] 3. This utility model achieves an effective connection between the two shells by adsorbing multiple first protrusions and second protrusions, which greatly improves the convenience of carrying and storing, and also reduces the space occupied by the device when storing it.

[0017] 4. This utility model uses a combination of baffle and sealing gasket to seal steel pipes of different diameters, greatly improving the range of applications of the equipment. Attached Figure Description

[0018] Figure 1This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 For the present utility model Figure 1 A magnified structural diagram of part A.

[0020] Figure 3 This is a cross-sectional view of the shell structure of this utility model.

[0021] Figure 4 This is a schematic cross-sectional view of the cylindrical body of this utility model.

[0022] The attached figures are labeled as follows: 1. First protrusion; 2. Slot; 3. Insert rod; 4. Second protrusion; 5. Housing; 6. Baffle; 7. Pressure gauge; 9. Cylinder; 10. First lead screw; 11. Connecting rope; 12. Torsion spring; 13. Fixing plate; 14. Take-up and release roller; 15. Gear disc; 16. Gear; 17. Second lead screw; 18. Positioning post; 19. U-shaped frame; 20. Sealing gasket; 21. Clamping plate; 22. Through hole. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Reference Figures 1-4This utility model provides a stainless steel pipe pressure testing device, comprising two housings 5. Two fixing plates 13 are bolted to the outer circumference of one housing 5. A take-up / release roller 14 is rotatably connected between the two fixing plates 13. A connecting rope 11 is wound around the outer circumference of the take-up / release roller 14, with one end of the connecting rope 11 fixed to the take-up / release roller 14 and the other end fixed to the other housing 5. A torsion spring 12 is bolted to one side of one of the fixing plates 13, with the other end of the torsion spring 12 fixed to the take-up / release roller 14. The connecting rope 11 prevents one of the housings 5 ​​from being accidentally lost. Simultaneously, the cooperation between the take-up / release roller 14 and the torsion spring 12 winds up the connecting rope 11, preventing the connecting rope 11 from becoming tangled due to excessive length. Two housings 5 ​​are slidably connected to their inner circumferential walls by baffles 6. Each baffle 6 has a sealing gasket 20 bonded to one side to enhance sealing. The sealing gasket 20 significantly increases the seal between the baffle 6 and the end of the steel pipe. Each housing 5 has a pushing mechanism on one side to move the baffle 6. This pushing mechanism includes a first lead screw 10 threaded into a threaded hole in the housing 5, and the first lead screw 10 is rotatably connected to the baffle 6. Rotating the first lead screw 10 causes the baffle 6 to move inward and contact the end of the steel pipe, thus achieving rapid sealing of the steel pipe. Each housing 5 has a fixing mechanism on its inner wall to clamp the steel pipe. This fixing mechanism includes multiple positioning posts 18 evenly fixed to the inner circumferential wall of the housing 5 by bolts. The positioning posts 18 have external... A U-shaped frame 19 is slidably connected to the side. A clamping plate 21 is bolted to the bottom of the U-shaped frame 19. Multiple second lead screws 17, threadedly connected to the multiple U-shaped frames 19, are rotatably connected to the inner circumference of the housing 5. Each U-shaped frame 19 corresponds one-to-one with a lead screw 17. A transmission mechanism is provided on the inner circumference of the housing 5 to drive the multiple second lead screws 17 to rotate synchronously. The transmission mechanism includes a gear disk 15 rotatably connected to the inner circumference of the housing 5. Gears 16, meshing with the gear disk 15, are keyed to the outer circumference of each end of the multiple second lead screws 17 located on the inner wall of the housing 5. By rotating the gear disk 15, the gear disk 15 drives the multiple gears 16 to rotate, and the gears 16 drive the multiple second lead screws 17 to rotate, thus achieving simultaneous rotation of the multiple second lead screws 17 and greatly improving the control of the rotation. To improve the efficiency of steel pipe fixing, anti-slip pads are adhered to the bottom of multiple clamping plates 21. A transmission mechanism drives multiple second lead screws 17 to rotate simultaneously. These second lead screws 17 simultaneously move the U-shaped frame 19 and clamping plates 21 downwards, causing the clamping plates 21 to contact the steel pipe simultaneously and form a compression state, thus quickly fixing the steel pipe to the testing equipment. Simultaneously, the multiple clamping plates 21 clamp the steel pipe from multiple directions, improving the stability of the steel pipe clamping and allowing for rapid positioning of the steel pipe, aligning it with the through hole 22. A cylinder 9 is welded to one side of one of the baffles 6, and a through hole 22 is opened inside the cylinder 9. A pressure gauge 7 (model Y-60B) is located on the outer circumference of the cylinder 9 and connected to its interior.A connecting pipe for injecting gas into the cylinder 9 is bolted to one side. Two housings 5 ​​are fitted over the ends of the steel pipe, and the ends of the steel pipe are fixed by fixing mechanisms on the two housings 5. Then, two pushing mechanisms drive baffles 6 to contact the ends of the steel pipe, sealing the steel pipe. Gas is injected into the cylinder 9 through the connecting pipe and then into the steel pipe through the through hole 22. By injecting gas into the steel pipe and testing the internal pressure using a pressure gauge 7, it is possible to test steel pipes of different lengths. This adapts to the needs of various steel pipe sizes and avoids the limitation of internal space in testing.

[0025] In particular, in this utility model, one of the housings 5 ​​has multiple second protrusions 4 fixed to its outer circumference by bolts, and the other housing 5 has multiple first protrusions 1 fixed to its outer circumference by bolts. The multiple first protrusions 1 correspond one-to-one with the multiple second protrusions 4. The first protrusions 1 and the second protrusions 4 are both made of magnets. Each of the multiple first protrusions 1 has a slot 2 on one side, and each of the multiple second protrusions 4 has a plug rod 3 that inserts into the slot 2 on one side. Through the cooperation of the plug rod 3 and the slot 2, the first protrusions 1 and 2 protrusions 4 are accurately positioned. The insertion of the plug rod 3 into the slot 2 prevents the two housings 5 ​​from rotating during adsorption, which would cause the first protrusions 1 and 2 protrusions 4 to detach from the adsorption. By adsorbing the multiple first protrusions 1 and 2 protrusions 4 one-to-one, the two housings 5 ​​are fixed together, which greatly facilitates the carrying and storage of the testing equipment and greatly reduces the space occupied by the equipment.

[0026] The use of this utility model involves the following steps:

[0027] S1: Fit the two shells 5 onto both ends of the steel pipe;

[0028] S2: Then rotate the two gear disks 15 in sequence. The gear disks 15 drive multiple gears 16 to rotate. The gears 16 drive multiple second lead screws 17 to rotate. The multiple second lead screws 17 simultaneously drive the U-shaped frame 19 and the clamping plate 21 to move downward, so that the multiple clamping plates 21 simultaneously contact the steel pipe and form a squeezing state, thereby fixing the steel pipe on the test equipment.

[0029] S3: Then rotate the two first lead screws 10, and the two first lead screws 10 respectively drive the baffles 6 to move inward and contact the two ends of the steel pipe, thereby quickly sealing the steel pipe;

[0030] S4: Finally, the gas is injected into the cylinder 9 through the connecting pipe and then enters the steel pipe through the through hole 22. The pressure inside the steel pipe is tested by the pressure gauge 7 after the gas is injected into the steel pipe.

[0031] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0032] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A stainless steel pipe pressure testing device, comprising two housings (5), characterized in that: Baffles (6) are slidably connected to the inner circumference of the two housings (5). A pushing mechanism for moving the baffles (6) is provided on one side of each of the two housings (5). A fixing mechanism for clamping the steel pipe is provided on the inner wall of each of the two housings (5). A cylinder (9) is fixedly connected to one side of one of the baffles (6). A through hole (22) is opened in the position of the baffle (6) inside the cylinder (9). A pressure gauge (7) is provided on the outer circumference of the cylinder (9) and connected to the inside of the cylinder (9). A connecting pipe for injecting gas into the cylinder (9) is fixedly connected to one side of the cylinder (9).

2. The stainless steel pipe pressure testing device according to claim 1, characterized in that: The pushing mechanism includes a first lead screw (10) threadedly connected to a threaded hole in the housing (5), and the first lead screw (10) is rotatably connected to the baffle (6).

3. The stainless steel pipe pressure testing device according to claim 1, characterized in that: The fixing mechanism includes multiple positioning columns (18) uniformly fixedly connected to the inner circumference of the housing (5). A U-shaped frame (19) is slidably connected to the outer side of the positioning column (18). A clamping plate (21) is fixedly connected to the bottom of the U-shaped frame (19). Multiple second lead screws (17) are rotatably connected to the inner circumference of the housing (5) and threadedly connected to the multiple U-shaped frames (19). The multiple U-shaped frames (19) correspond one-to-one with the multiple lead screws (117). The inner circumference of the housing (5) is provided with a transmission mechanism that drives the multiple second lead screws (17) to rotate synchronously.

4. The stainless steel pipe pressure testing device according to claim 3, characterized in that: The transmission mechanism includes a gear disk (15) rotatably connected to the inner circumference of the housing (5), and a plurality of second lead screws (17) are keyed to the outer circumference of one end of the inner wall of the housing (5) with gears (16) that mesh with the gear disk (15).

5. The stainless steel pipe pressure testing device according to claim 4, characterized in that: Two fixing plates (13) are fixedly connected to the outer circumference of one of the housings (5). A take-up roller (14) is rotatably connected between the two fixing plates (13). A connecting rope (11) is wound around the outer circumference of the take-up roller (14). One end of the connecting rope (11) is fixed to the take-up roller (14), and the other end is fixed to the other housing (5). A torsion spring (12) is fixedly connected to one side of one of the fixing plates (13), and the other end of the torsion spring (12) is fixed to the take-up roller (14).

6. The stainless steel pipe pressure testing device according to claim 5, characterized in that: One of the housings (5) has multiple second protrusions (4) fixedly connected to its outer circumference, and the other housing (5) has multiple first protrusions (1) fixedly connected to its outer circumference. The multiple first protrusions (1) correspond one-to-one with the multiple second protrusions (4). The material of the first protrusions (1) and the second protrusions (4) is magnet.

7. The stainless steel pipe pressure testing device according to claim 6, characterized in that: Each of the first protrusions (1) has a slot (2) on one side, and each of the second protrusions (4) has a plug (3) on one side that is inserted into the slot (2).

8. The stainless steel pipe pressure testing device according to claim 2, characterized in that: Each of the two baffles (6) is fixedly connected to a sealing gasket (20) to enhance the seal.

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